Duplex-card-stamping apparatus



June 10 1924. 1,497,149

K. A. A. LEHMANN DUPLEX CARD STAMPING APPARATUS Filed Nov. 25 1922 e Sheets-Sheet 1 Alla/way- J1me 10, 1924.

I 1,497,149 K. A. A. LEHMANN DUPLEX CARD STAMPING APPARATUS Filed Nov. .25, 1922 6 Sheets-Sheet 2 firm/on- If/LA. [eimazm AZZar/m y June 10, 1924.

K. A. A. .LEHMANN I DUPLEX CARD STAMPING APPARATUS Filed Nov. 25 1 5 Sheets-Sheet 3 w NQ June 10, 1924. 1,497,149

' K. A. A. LEHMANN DUPLEX CARD STAMPING EPPARATUS Filed Nov. 25. 1922 6 Sheets-Sheet 4 June 10, 1924. 4 K. A. A. LEHMANN DUPLEX CARD STAMPING APPARATUS Filed Nov; 25, 1922 a Sheets-Sheet 5 Jim/ 10 1924.

K. A. A LEHMANN DUPLEX CARD STAMPING APPARATUS Filed Nov. 25 9 6 Sheets-Sheet 6 5 M M o @u Patented June 1t), 1924.

KARL AUGUST ALBERT LEHMANN, OF BIENNE, SWITZERLAND.

DUPLEX-QARD-STAMPING APPARATUS.

Application filed November 25, 1922. Serial No. 603,330.

To all whom it may concern:

Be it known that I, KARL AUoUsT ALBERT LEHMANN, a citizen of the Swiss Confederation, residing at Bienne, Switzerland, have invented certain new and useful Improve ments in Duplex-Card-Stamping Apparat-us, of which the following is a specification.

The subject of the present invention is a two-card stamping apparatus, in which the stamping of two cards can only take place if both cards are introduced into card-guides and occupy such a position, that the impression on the cards occurs at the predeter mined spot, and in which the cards introduced in the apparatus produce the disengagement of thepri'nting device by mechani c iil means.

' The'an'nexed drawings illustrate the in Vention byftwo' examples of construction:

Fig. 1 "being a side view of a two-card stamping apparatus with mechanical disengaging device,

Fig. '2 a vertical section along line A-B of Fig. 1,

Fig. 3 a side View of the disengaging or releasing device in the position in which the stamping may take place.

4 and 5 are side views of certain details shownin Fig. 3,

1 Fig. 6 is a horizontal section through the punching tool,

Fig. 7 is a front view and Fig. 8 a side View of a card and releasing pin,

Fig. 9 is a detail view of printing device omitted from Fig. 2,

Fig. 10 is a side 'view of the second form of construction of the apparatus,

Fig. 11 is a vertical section along line 'CD of Fig. 10,

Fig. 12 is a side view of the apparatus in the position occupied in the process of printing,

Fig. 13 is a side view of the locking lever in the released position.

' The machine illustrated by Figs. .l 9 is of they type in which, every time an impression is made on the card, a piece is cut off the card on one side, a step or shoulder of gradually increasing depth being 'thus formed, in order that when the card is next inserted it may, pass further into the machine, so that each'impression is made above the preceding one. The machine comprises initsconstruction two stationary card- 7, a serving'to cards 1 and 1 two movable card-guides 8, 8% actuated by springs and projecting into the path ofthe cards, 1, 1, said guides 8, 8 having the object of guiding and holding the cards which have become narrow b the operationof the step-cutting device. he cards 1, 1? drop by their own weight in the guides 7', 7?, thereby impinging upon the movable card guides 8, 8 (Fig. 1) actuated by the springs {L8, 48* after which the cards are pressed down.by hand into the position shown Fig. 3, thereby causing the two movable guides 8, 8 to swing out and ensuring the correct adjustment of the card in the position for printing. The lateral pressure thus exercised on the cards by the aid of the movable guides under the influence of springs 48, 48 also serves to hold the cards fast during the stamping, which cards, in the absence of such a'clamping action, would be shifted, when the hands are removed, by the pressure of the disengaging pins 2, 2? acting in an upward direction. F orreleasing the pressure devices which stamp tlie cards, two disengaging pins'2, 2 are-pro;- vided, with which the two cards-1, 1? come in contact. WVhen the pins 2, 2? are displaced the releasing levers 3, 3 which are operatively connected with the same and pivotally mounted on the stationary frame parts 42 and 42 by means of pins 43: and 43 and provided with adjustable weights 4, l are also displaced, so that the openings for the locking levers 6, 6 provided in the guide plates 13, 13 are uncovered and the said levers mounted on the main shaft 5 are allowed to move, thus allowing the shaft itself to be turned by the hand lever 15 and the hammers 14:,14 to oscillate. By so doing they impinge against the cards 1, 1 which have been inserted and'cause an impression on the same. In addition to the movable pin 2 or- 2 a stationary abutment is provided at least on one side Moreover, the upper end of the pin 2, 2 is made oblique in order to eject the cut off part of the card during the up motion of the pin (Fig. 8). The step-cutting device comprises punehes or dies 9', 9 and matrices 10, 10 The latter are operatively connected'with the main shaft 5 by means of levers 40, 40* mounted on the same in such a manner that every time the cards receivean impressioma piece is cut oifthe edgeo-f the card. and the step correspondingly deepened; The releasingpin to which a hole in the matrix at its upper end serves as a guide are narrower than the lower edge of the step to be cut off, so that the latter can come in contact with the above mentioned stationary abutment on the matrix.

As each disengaging device operates separately, such a device might be used also in a single card apparatus.

The printing hammer 14 or 14 is loose on the shaft 5 and is periodically under the influence of a coiled spring 25; moreover, the hammer is provided with a nose 26 adapted to engage with a pawl 27 pivo'tally mounted on the machine frame. An arm 28 of the pawl 27 extends into the path of an abutment pin 29, which passes through the shaft 5 and is secured in the same. The lower end of the pin 29 which projects beyond the shaft 5 serves to suspend or hold the torsion spring 25 (Fig. 9). The latter has an initial tension which in the position of rest is taken up partly by the pin 29 and partly by the pin 30. The pin 30 is secured in the leaf spring holder 45, which in its turn is fixed to the shaft 5. In the position of rest themechanism of the hammer is is located behind the pawl 27. If the shaft 5 is turned by means of the hand lever 15, the immediate effect is to lift the pin 30 away from the end of the torsion spring 25, the latter is subjected to supertension which it transmits through the cross piece &6 com pletely upon the hammer, because the latter is at first held back by the hook or pawl 27 As the shaft 5 continues to turn the pin 29 strikes the lever arm 28, thereby lifting the pawl 27 and releasing the hammer it. The latter is now jerked against the card 1 under the influence of the spring 25, thereby producing a printed impression on the card. When the pressure relaxes, the ends of the torsion spring lay themselves again with the intensity of the initial pressure upon the pin 30 serving as an abutment, this taking place immediately before the hammer 14 strikes the card. The hammer is provided with a rubber cushion 17, so that when it is no longer under the influence of the spring 25 and impinges on the card it rebounds from the same, thus releasing the card and the type discs 35 immediately after the impact. In order to assure this lifting of the hammer 14 under all circumstances a leaf spring or bufi'er spring 31 has been provided, against which the hammer strikes shortly before it meets the card 1.

This spring 31 cannot stop the hammer when first jerked forward, but guides it back after the impact. When the hand lever 15 returns to its starting position under the influence of the draw spring a l, the bufi'er s ring guides the hammer 1 1 during the I rst part of the motion; as the motion continues the hammer drops back into its pcsitlon of rest by its own weight, thus cans ing the nose 26 to lie again behind the pawl 27.

According to the second example of con struction the apparatus has two stationary card guides 15, 15* into which the two cards 1, 1 are introduced. In the direction of the feed motion but outside of the path of the cards two slidable rods 16, 16 are provided, each of which is linked together with a pivotally mounted three-armed lever provided with weights 17, 1.7 and 18, 18 hese two rods are pivotally connected also with a transverse rail 19 to which is linked a releasing device 20, the whole being so arranged that when the two rods 16, 16 are shifted, about one half of the releasing mo tion of each rod 16., 16 is transmitted to the releasing device 20. The machine frame has for the releasing device 20 and retaining device 6 g locked for the latter until the two cards have assumed the position for printing. The weights 18, 18 are so proportioned that the parts situated opposite to the fulcra of the weights (16, 16, 19, 19, 19*, 20) are ap proximately balanced, while the weights 17 17 serve as excess weights and this in such a manner that the whole as well as the inserted cards must remain in the lowest and also in the starting position (see also the starting position Fig. 10 and the printing position Fig. 12).

To ensure that the rods 16, 16 return to their highest position (Fig. 10), when the cards are drawn out, and that the mechanism will be locked by the members 20 and 6, the members 16, 16 are provided with pairs of tines or studs 19, 19 arranged at right angles to each other (and mounted on adjustable card-stops 4E9, 19 which slightly clamp the cards fed into the apparatus, so that when the cards are drawn out the rods 16, 16 are drawn upward, until they have reached their highest position, whereby the excess weights 17, 17 are reversed.

In both types of apparatus the cardguides are relatively long, because the correct and clean printing of the cards depends largely on the correct guidance.

In the second form or type of apparatus a step-cutting device is not used.

What I claim is:

1. In a duplicate card stamping machine of the kind described, a device for introducing and guiding a pair of cards, comprising a machine frame, a pair of stationary guides fixed to the frame and adapted to guide the longitudinal edges of the cards introduced into the machine in a direction parallel to the said edges, and a pair of an tomatically adjustable guides adapted to secure the cards at the inner ends of the said fixed guides to clamp the same by spring action upon the'l'cngitudinal edges of the cards and thereby retain them in the comeet uide 13, which however, is

position for receiving an impression from the stamping mechanism, substantially as described.

2. In a device for introducing and guiding a pair of cards as specified by claim 1, pivots on which the automatically adjustable guides are mounted and adapted to be operated by the motion of the cards, when pressed inward by hand, substantially as described.

3. A two-card type-impression time recording machine having guides for the two cards, a releasing member lying in the path of each card and adapted to be displaced when the cards are inserted in the guides, a locking member so co-operating with said releasing members that the locking member is held against movement by the releasing members until the latter are displaced by the cards, a type im ression device co-operating with said 100 ing member and a shaft and handle whereby said type impression device can be operated when the locking member is no longer held against movement by the releasing members, said releasing members comprising pins passing into slots in stops adapted to arrest the insertion of the cards but to be depressed thereby and so to rock a lever out of the path of the locking member.

4. A duplex card stamping machine of the type described comprising in its construction a horizontal main shaft mounted in a machine frame carrying printing levers, mechanism for introducing guiding and holding a pair'of cards, a pair of vertically movable guide pins placed in the path of the said cards and adapted to be shifted by the introduction of the same, a retaining and releasing device located between the said guide pins and the main shaft and adapted to prevent the motion of the said shaft and printing levers, until the said guide pins are placed in the workin position by the insertion of a pair of car s, substantially as described.

In testimony whereof I have hereunto set my hand.

KARL AUGUST ALBERT LEHMANN. 

